00:01
Hi, i'm david and i'm here to have you answer the question.
00:03
In the question here, we're given the table of the frequency for wearing the helmet or not and the injury status.
00:11
Now let me bring up the table on the top here.
00:14
From the table here, the first question one asks you to find the probability that a randomly selected injury injured specialist had a server friend injury, so i will call necessarily the s and the probability in the probability in the first.
00:29
S and equal to the proportion when the denominator equal to the total number of the pupil will be the 300 3 ,390.
00:40
The number that have the server prime entry will be the 62.
00:44
Then we get equal to the 62 divided by 3999 around the answer to the four decimal places.
00:55
It will be the 0183.
00:58
For the question 2, want you find the probability that selected insured basalids did not wear the helmet and had the server plant injury...